The GOP is all about power. Nothing else matters. They could give two shits about the health/best interests of the nation -- they just want Biden to fail -- same strategy perpetrated against Obama.
And the GOP will do anything to win elections. The last thing they want is strong 2020 voter turnout -- knowing they will lose every time. Hence, they have demonized mail-in voting as "fraudulent" in order to roll back voting to the Stone age -- allowing a narrower window of access and opportunity to vote, plus making voting an obstacle course, plus making sure the counters (their cronies) can fix the count in close races.
The Democrats need to accept the battlefield as it is, yet conquer it anyway. Register voters, call out the GOP for their suppression, rally the troops to the polls, and climb the fookin mountain. Once Democrats smash thru the GOP's final fortifications, then America can take off like a rocketship.
Make the current GOP irrelevant. Win more races.